Monessen Hearth IDV490PVC User Manual

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IDV380/IDV490 Fireplace Insert
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Make sure you have the items listed below before installing appliance.
  External regulator (supplied by installer) 
  Piping (check local codes) 
 Test gauge connection*
  Sealant (resistant to propane/LP gas) 
  Sediment trap (optional but recommended) 
  Tee joint 
  Pipe wrench 
  approved flexible gas line with gas connector (if allowed by local codes — not provided)
*  A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test 
gauge connection. Purchase the CSA design-certified equipment shutoff valve from your dealer.
For propane/LP connections only, the installer must supply an external regulator. The external regulator will 
reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 13 inches of wa-
ter. If you do not reduce incoming gas pressure, burner system regulator damage could occur. Install external 
regulator with the vent pointing down as shown in Figure 14. Pointing the vent down protects it from freezing 
rain or sleet.
 
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EXTERNAL
External 
Regual-
tor
Vent 
Pointing 
Down
100 gal. (min. 
Propane/LP 
Supply Tank
FP1930
Figure 14 - 
External Regulator with Vent Pointing Down 
(Propane/LP Only)
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use only new black iron or steel pipe. inter-
nally tinned copper or copper tubing can be 
used per National Fuel Gas Code, Section 
2.6.3, providing gas meets hydrogen sulfide 
limits, and where permitted by local codes. 
Gas piping system must be sized to provide 
minimum inlet pressure (listed on data plate) 
at the maximum flow rate (Btu/hr). undue 
pressure  loss  will  occur  if  the  pipe  is  too 
small.
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Use proper gas type for the fireplace you are installing. If you have conflicting gas type, do not install 
fireplace. See dealer where you purchased the fireplace for proper fireplace according to your gas 
type.
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ARN
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A qualified installer or service person must 
connect  appliance  to  gas  supply.  Follow 
all local codes.
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For  propane/lP  units,  never  connect 
fireplace  directly  to  the  propane/lP 
supply.  this  burner  system  requires  an 
external  regulator  (not  supplied).  install 
the external regulator between the burner 
system and propane/lP supply.
When  using  copper  or  flex  connectors  use  only  fittings 
approved  for  gas  connections.  The  gas  control  inlet  is 
3/8" NPT.